Still in 2012 there is no reason for gravity (that i can find online) and only the few laws of gravity (Newton, Einstein). I am no Scientist and not claiming i know allot about Physics however i do know the basics and want people to put the basics aside and think outside the square on this question. "how we can effect it on earth" Also another question is if "large" objects with allot of mass cause gravity on/in time-space (mesh), is there a minimum and maximum for the effects of gravity and why if we put something into space (like a spacecraft) that it does not create any gravity of its own? or does it? I would think that if you put something on nothing then it would create something (even if it is very small) given every action has a reaction. again I am no scientist so be nice and please don't answer by saying we don't know that yet, facts or your ideas will be a good answer.